Cube Black with Here2 and HereLink. Topo bird.
After 32 uneventful mission flights, sometimes during the 33rd logging stopped, then, after switching from RTL to Loiter for manual landing, the copter started acting like a wallowing drunkard, with the pilot reporting it hard to control and unresponsive to radio commands at times.
The bin is truncated, but the tlog shows the descent throes.
Log archive here: